# Fetch maximum character allowed for a specific custom column This API can be used to fetch maximum character allowed for user data type of a specific custom field ## Endpoints `GET /dcapi/customColumn/udtLength` ## Request URL `https://{server-hostname}:8383/dcapi/customColumn/udtLength` ## Scope `CustomField.READ` ## Header `Authorization: d92d4xxxxxxxxxxxxx15f52` ## Request Parameters ### Request Headers - **Accept** `string` **Mandatory**: `application/udtLengthDetails.v1+json` ## Sample Request ```curl curl --request GET \ --url https://appdomain/dcapi/customColumn/udtLength \ --header 'Accept: application/udtLengthDetails.v1+json' \ --header 'Authorization: d92d4xxxxxxxxxxxxx15f52' ``` ## Response Parameters ### HTTP code 200 #### Response Body - application/json `JSON Object` - **lengthOfUDT** `string`: Returns maximum length of the user data type for given custom field ## Possible Response Codes - **200** `HTTP code` ## Sample Response: HTTP 200 ```json { "lengthOfUDT": "20" } ``` ![ ](https://www.zohowebstatic.com/sites/zweb/images/people/ico-help.png) **Duration:** 1 minute | **Threshold:** 30 | **Lock period:** 5 minutes Duration - Time window for the threshold. Threshold - Number of API calls allowed within the specified duration. Lock Period - Wait time before consecutive API requests.